Collapsible baby carriage



P. H. DENNEN COLLAPSIBLE BABY CARRIAGE Oct. 9 1923. 1,47%151 Filed April 1, 1922 2 Sheets-Sheet 1 @114 gag/11110100111001: LWl/I/l/l/l/l Get, 9, 1923. Y 1,470,151

IP. H. DENNEN COLLAPSIBLE BABY CARRIAGE I Filed April 1. 1922 2 Sheets-Sheet 2 IIIII/IIIIIIIIIIIIIlIII-I Patented Get. 9, 1923.

1,470,151. stares PArnNrorricE.

PHILIP H. DENNEN 0F DENVER, COLORADO. ASSIGNOB OF THIRTY-NINE .ONErHUNr DRED'IHS 'IO THOMAS E. LYNCH AND TEN DI TE-HUNDEEDTHS T0 WILLIAM R.

LYNCH, BOTH 0F DENVER. COLORADO.

COLLAPSIBLE BABY CARRIAGE.

Application filed' April 1,

To a]? whom it only concern:

Be it known that I, PHILIP H. DENNEN, a citizen of the United States, residing at the city and county of Denver and State oi" Uolorado, have invented certain new and useful IIUPIOVGRIEDtS in Collapsible Baby" Carriages; and I do declare the tollowiiur to be a tull. clear. and exact description of the invention, such as will enable others skilled in the art to which appertains to make and use the same, reference being had to the accompanying" drawings and to thecharacters of reference marked thereon, which form a iart of this specification.

This invention has for its object the pro duction of a baby carriage that can be conveniently folded intoa compact parcel that can be readily carried in the hand and transported on the street car.

l am aware that many ditlerent kinds of collapsible haby carriages have been patented and oiiered for sale, and I'will not attempt to review the prior art, but will merely describe my invention, and for this purpose I shall have reference to the ac companying' drawings which show the framework only and in which l ig. 1 shows a perspective view of my improved carriage in the position which the parts occupy when the carriage is in condition for use; several elements which have nothing to do with my invention being omitted for the sake of olearness;

Fig, 2 shows a front elevation of the or rriaee shown in Fig. l;

Fin: shows a front elevation of the car riae'c in collapsed position;

Fig. l is a longitudinal section of the axle and hows the relationship oi the parts when the parts are in extended position;

Fig. 5 is a section on the same plane a Fig. land shows. the parts in collapsed position.

Fig". 6 is a section taken on line 6-6 Fig. 7 and shows the mechanism by means of which the axle is extended and collapsed;

Fig. 7 is a longitudinal section of they some distance into shaft lo.

of such length that when the axle 1s col handle taken on a vertical plane 7-? 1. l re. 8 is a side elevation of a portion ot the handle looking? in the d rection of tlc arrow 8 Fig. 7;

Fig. 9 a top plan view of a portion of side diameter of member 15 1922. Serial No. 548,609.

the carriage looking in the direction of arrow 9 Fig. 1; i

ig. 10 a detail showing the method of securing the lost motion connection between the back and the bevel gear Fig. 11 shows a rear elevation of the gear illustrated in Fig. 10;

Fig. 12 shows a front elevation of a portion of the back shown in Fig. 11;

Fig. 13 is a section, on a somewhat en lalged scale, taken on line 13-13, Fig; 8.

The same reference numerals will be used to designate the same or similar throughout the several views.

Numerals 10 represent themain supporting wheels which are rotatably mounted onthe ends of the collapsible shaft, the construction of which is shown in Figs. a and 5, and which I will now describe.

A plate 11 has an opening 12' extending from one edge to the other and within this opening I rigidly secure a tubular member 13 which is provided at one end with an inwardly projecting flange 14:. A tubular member 15 has one end thereof slidable in the opening in flange M and has rigidly secured thereto near the outer end thereof-a block 16; a ferrule 17 surrounds a portion of the outer end of pipe 15 and has its inner end abutting the block 16 while the outer end thereof serves aS a stop for the wheel 10 which is hold in place by any suitable means such as a washer or nut. Slldable within the tubular member 13 is a sec ond pipe 19 whose outer diameter is of such size that it will freely slide in the opening in member 13. Near the outer end ofshatt 19 the opening therein is reduced in diameter so as to be substantially equal to the in Beyond the block .16 the outer diameter of shaft 19 is also reduced to substantially the same di amcter as the outside diameter of shaft 15 and a tubular ferrule 17 placed thereon'toserve as an inside stop forwheel 1 A round rod 20 is secured within the opening in the outer end ofshatt 19 and extends for The rod 20 .S

lapsed in the manner shown Fig. 5 t will extend almost or entirely through the same and the parts must be so proportioned that the rod will be within the opening in 7 position vin -wl bevel-45 lies above hole 4-6.

'21.. Member 23 has a tubular extensio central of these plates Iprovioe a bushincj 28 which has circulanportions 2 lend 25 which are journaled in cooperativ'eround holes in members 11 and2l. To the upper end of member 23 I secure a collar 26 hich prevents it trom' moving downwardly with respect to plate 2].:and to the lower end l secureanother collar 27 which cooperates with plate. 11 to PlfEl'GIltjUjjWfilTl .3

The parti23 will therefore be rotatably but non-slidably mounted in the plates ll and which serves to hold iii-place. a locking; mem ber, 29.; the function and operation ot'which willbe hereinafter described. ldember 27 has secured theretoor termed integral therewith, a stop 30 (Fig.2) which cooperates with a. stop 31 on plate 1.]. and limits the rotary movement of member 23. it square opening extends axially through member 23 and within this opening the: is slidinpgly mounted a tubular member 0t rectangrn lar shape which has its lower end closed by a cap 33=and its mpel end is crirnped as in, dicated at 34. Telescopically connected to member 32 is a second tubular member 35 whiehhas its lower end 36 expanded to fit the inside of member The shoulders formed by; the crinipedportion 34 and the expanded portion 36 form stops which positively prevent the two members from being separated by a longitudinal pull. Secured to the outside of member near its upper end is a spring locking member 37 whose free end is bent at right angles to t'orina hook 38 which projects through an opening: in the crimped portion 34 and engages with a registering openin in the side of the cooperating member 3a. The member 38 has its inner end bevelet as indicated by 39 and the cooperating hole in member 35 has its upper side beveled indicated by 40 and the lower edge ot. expanded portion 36 has a beveled portion 41. which engages with the bevel 39 to move the stop 38 outwardly tor the purpose of permitting telescoping: ot the parts. The handle is made up ot as many separate telescoping members as may be necessary to secure the desired length, all of: which are constructed and connected in the manner just described, except the end member 42 which is provided with a plunger bar-43 which is held in itsupper or retracted position by means of a spring 44: which normall hOlCls tllG plunger in the dotted line ich the lower end with its To the upper end of theend member a hand grip is cement;

; ber and either welded thereto or held.

connected. Then it is desired to collapse ber 38. llernber 42 will then slide dow wardly and its lower end will unlock the locking means between the next two members until finally the beveled. portion ll 0t flange 36 unlocks the lockinp' member 29 and permits tubular member 32 to slide in member 23. The lower ends ot springs 3-7 engage the crimpcd end of the tube below and act as stops. In the manner above described, the handle may betelesco 'ied and extended. Secured to member 23, or torn id integral therewith is a pair of Sl'll'ES 48 to the ends. of which I pivot-ally secure ciuved. links 49 the out r ends of which are cured to the blocks 16 in the manner shown in Fig. 6. When the axle is in its extended position (Figs 1, 2 l: and 6) the arms 48 occupy the position shown in Fig. 6 a d stop 30 engages stop 31 (Fina 2) When usis do sired to collapse the. axle, the handle rotated in the direction ot the arrow in Fig: 6 for substantially 180 degrees which will bring the axle parts into the position shown in Fig. 5. To the structure described above I secure the framework of the carriage by means ot? supportinpgbars, or braces 50, 51 52 and till Braces 50 and 5.1 and 52 and 53 form pairs means of screws 54L in the manner shown Flex 7. The upper ends of bars 50 and are bent around. the ends ot a tubular men] in -place by screws-56; and the upper ends of braces 52 and 53 are similarly secured to the ends of u'ieiubcr 5'7 9). Side bars 58 and 59 join the ends of members 57 and 60 and torm a, rectangular trame which serves as a means tor supporting the up holstery of the seat (not shown). Extending through tulmlar mei'nber is a rod 60 to the ends of which I secure bars 61 .which extend downwardly and have pivoted to their lower ends Ushaped toot rest 62. The sides'of the toot rest are made in the shape ct bell crank levers and have downwardl extending; arms 6. to the ends of which I secure suitable wheels Bars 61 are held in adjusted position by any suitable means; such as a set screw l55 p n through thetubular member and engaging the rod 1. and the foot rest 62 also secured to the ends of bars 61 by means which permit them to be rigidly ,-lamped thereto The ends or member 57 are provided with bearings 65 of reduced diameter, upon which is oscillatingly mounted the U-shaped strap luu 66 which forms the framework for the back. Near the top of the U a transverse rod 67 is provided for a brace. llotatably mounted on the outer ends of bearings are beveled gears 68 whose rear surfaces are each provided with an arcuate slot 69 which cooperate with pins 70 on the lower ends of member (36 for the purpose of forming a lost motion connection between the two, the purose of which will hereinafter appear. Members 58 and 59 are each provided with bracket meml'iers 71 and 72. which serve as bearings for a rotatable shaft 73 to which the ill-shaped side members 7 1 are connected.

Secured non-rotatably to the rear end of each shaft 73 is a bevel gear 75 which meshes with gear (38. Near the rear end of each sl aft 73 is a rectangular portion 76, and slidable on each shaft is a bushing 77 which is also rectangular and adapted to telescopically cooperate with the rectangular parts 76 to hold the shaft against rotation. I1 collar 78 is rigidly secured to each shaft 73 and-serves as an abutment for a spring 79 whose function it is to impart to members 77 a tendency to telescope with members 76. A bar 80 connects members 77 and has secured substantially centrally thereof a rod 81 which has a rotatable connection therewith. Rod 81 passes through a hole in rod 57 and is provided with a pin 82' which can pass from one side of rod 57 to the other through a suitable slot 83. A handle 84 permits the rod 81 to be rotated and moved backwards and forwards. When the pin 82 is so placed that it engages in slot 83. the springs 79 will force members 77 rearwardly' and onto members 76 and serve to prevent rotation of shafts 73. When pin 82 is in front of bar 57, shafts 73 are unlocked.

With the arrangement described above it is apparent that when the back member 66 is rotated backwardly in the direction of the arrow X in Fig. 1, pin 70 will engage the end of slot 69 and cause gear 68 to rotate. which in turn will rotate gears 75 and move the sides 74 downwardly in the direction of arrows Y.

The function of the lost motion connection between the back member 66 and the gear (38 is to permit the back to be adjusted through a corresponding number of degrees while the sides 74 remain in their upright position. Straps 85 are pivoted to the sides of member 66 and have notches 86 which engage pins 87 and serve to hold the back in adjusted position.

A light framework 88 is pivoted at its upper end to the seat member and is provided with wheels 89 which serve to hold the carriage against tipping rearwardly. A l'filllfiffible strap member 90 is adapted to be secured to the seat in the manner shown in Fig. for the purpose of functioning as a lmndlo for carrying the collapsed carriage. or to the front of sides 74 (Fig. 2) for the purpose of preventing the child from falling forward. 1

ll hen it is desired to change the carriage clockwise directioinor in the direction of the arrow in Fig. 6; this draws the axle members inwardly in a manner that is obvious from the drawing. When the wheels have been moved to the position shown in Fig. 3. the handle is then collapsed by pressing plunger 4-3 and unlocking the upper lock 37. The handle can then be telescoped in the manner explained above. lVhen the handle and axle have been collapsed the back and sides may then be turned downwardly in the direction indicated by arrows X and Y. The parts will then be in the position shown in Fig. 3, and the carriage can be grasped by handle 90 and carried in one hand. When the carriage is to be used. back 66 and sides 74 are first rotated to upright position. Thehandle is then extended. after which it is rotated to extend the axle to its full length.

Having now described my invention, what ll claim isf LIn a device of the described in combination, a axle. a handle secured thereto. and means whereby the axle may be extended and collapsed by a rotary movement of said handle.

In a collapsible baby carriage, in combination. an extensible and collapsible axle, an extensible and collapsible handle rotatably attached thereto. and means whereby said axle may be extended or collapsed when the handle s rotated about its longitudinal axis.

.ln :1 collapsible baby carriage, in combination. an extensible and collapsible axle. an extensible and collapsible handle rotatably attached thereto. means whereby said axle may be extended. or collapsed when the handle is rotated about its longituoinal axis,

and a framework comprising a seat. sides and back attached to said axle. said sides and back being movable with respect to the seat.

4-. la a collapsible baby carriage. n combination. arraide comprising: a tubular supporting" .u-end' er. a pair of tubes telescopically connectedtherewith, said tubes being reeadapted to telescope with each other, where by the axle may be extended or collapsed, a handle rotatably connected with said axle, and means whereby the rotation of the handle will extend or collapse said axle.

5. In a collapsible ba -b3- carriage, in combination, an'axle comprising a tubular sup-- porting membeiu a pair of tubes telc-Scopically connected therewith, said tubes being adapted to telescope with each other, whereby the axle may be extended or collapsed; a rod extending entirely through bo h of said tubes when the axle is collapse I, and means comprising a handle rotatabl' r connected with said axle whereby said axle may be extended or collapsed. V

6. In a collapsible baby carriage in combination, an axle comprising a tubular supporting member, a pair of tubes telescopically connected therewith, adapted to telescope with each other. where by the axle may be extended or collapsed, a rod extending entirelythrough said tubes when the axle is collapsed, and means comprising a collapsible and extensiblehandle rotatably connected with said axle whereby said' axle may be extended or collapsed.

7. In a collapsible baby carriage, in combination, an axle comprising a tubular supporting member, a pair of tubes telescopically connected therewith, said tubes being adapted to telescopewith each other, whereby the axle may be extended or collapsec, a ro'd'extending entirely through both of said tubes when the axle is collapsed, and

means for collapsing and extending the axle, comprising a handle rotatably connected with said axle and providedwith means whereby a rotation thereof extends or collapses saidaxle. I

8. In combination, an extensible and collapsible axle, a handle rotatably connected thereto and provided with means for extending or collapsing it at will, aframework comprising a seat, rigidly secured to the axle structure, a pair of sides hingedly secured to said seat, and means for locking said sides in a plurality of different positions.

9. In combination, an extensible and. col lapsible axle, a handle rotatably connected thereto and provided with means for ex tending or collapsing it at will, a framework comprising a seat rigidly secured to said axle structure, a pair of sides hingedly secured to said seat, means for locking said sides in plurality of different positions,

and a back member hingedly connected to said framework.

10. In combination, an extensible and collapsible axle, a handle rotatably connected thereto and provided with means for extending or collapsing it at will, a framework comprising, a seat rigidly secured to said tubes being both 0t said axle structure, a'pair of; sides hingedly secured to san'lseat, a. back member hingedly connected thereto, means whereliiy the movement of said back member about its pivot oi? sides hingedly secured to said seat, .a back member hingedly connected thereto, a pair of bevel gears connecting each side-to said back, whereby the movement of said back member about its pivot will impart a corresponding movemen-t to said sides, means to lock said sides in upright position, a lost motion connection between said back and said gears whereby the back may be adjusted without 'rotating the gears, and means for locking the back in adjusted position,

12. In a collapsible baby carriage, in com- ;bination, a pair of spaced plates, a tubular member secured to one of said plates, a pair of tubes telescopically connected to said tubular member and adapted to telescope tween the end of said arms and each ot' said telescoping tubes, whereby arotation of said arms will reciprocate said tubes, and a handle slidably connected with said rotatable member.

13. In a collapsible baby carriage, in combination, a pair of spaced plates, a tubular member secured to one of said plates, a pair of tubes telescopically connected to said tubular member and adapted to telescope with each other, a member rotatably mounted between said plates, a pair of opposed arms secured thereto, a connecting rod between the end oii said arms and each of said telescopingtubes, whereby a rotation of said arms will reciprocate said tubes, and a collapsible handle slidably connected with said rotatable member.

1a., In a collapsible baby carriage, in combination, a pair of spaced plates, a tubular member secured to'one of said plates, a pair of tubes telescopically connected to said tubular member and adapted to telescope with each other, a member rotatably mount- 'ed betweensaid plates, a pair of opposed arms secured thereto, a connecting rod between the end of said arms and each of. said telescoping tubes, whereby a rotation of for securely locking said position, means compris said arms will reciprocate said tubes, and a collapsible handle slidably connected with said rotatable member, said handle comprising a plurality of tubular members telescop ically connected, and provided With means to hold them locked in extended position.

15. In a collapsible baby carriage, in combination, a pair of spaced plates, a tubular member secured to one of said plates, a pair of tubes telescopically connected to said tubular member and adapted to telescope with each other, a member rotatably mounted between said plates, a pair of opposed arms secured thereto, a connecting rod be tween the end of said arms and each of said telescoping tubes, whereby a rotation of said arms will reciprocate said tubes, and a collapsible handle slidably connected with said rotatable member, said handle comprising a plurality of tubular members telescopically connected, means to hold them locked in extended position, and manually operated means to unlock said locking means to permit the handle to be collapsed.

In testimony whereof I atlix my signa- 25 ture.

PHILIP H. DENNEN. 

